Ziel-Plast Plastic Insulation Washers - 60mm Timco TAD60 Large Surface Area Impact Resistant Versatile Masking Plug The Ziel-Plast Plastic Insulation Washers are designed for the effective fixing of the outer layer of thermal insulation materials to various substrates, including timber, OSB boards, and sheet metal. With a size of 60mm, these washers provide a large surface area that enhances stability and support. Their impact-resistant construction ensures durability, making them suitable for a wide range of applications. Additionally, the versatile design allows for easy integration with appropriate screws, while the included masking plug offers a neat finish. Available in packs of 100, these washers are an essential component for any insulation project, ensuring reliable performance and quality results.